Berlin, 1 December 2025 - OpenCloud, the powerful open source platform for file management, file sharing and digital collaboration, is providing key enhancements for providers, large organisations and KRITIS environments with its latest production release, including new Kubernetes Helm charts for maximum scalable high availability. In addition, OpenSearch, which emerged from Elasticsearch, is now supported as a scalable backend for high-performance file searches.

Multi-tenancy for complex organisations

The multi-tenancy allows multiple clients to be created separately within a single deployment. OpenCloud thus specifically addresses the requirements of providers, municipal data centres and large organisations with multiple departments or customer environments.
"Multi-tenancy provides the necessary flexibility to operate OpenCloud securely and efficiently even in complex enterprise scenarios," explains Tobias Baader, Product Manager of OpenCloud.

Helm Charts bring high availability and cost efficiency

With the new Helm Charts, OpenCloud achieves a 5.25-fold increase in efficiency. The updated deployment architecture enables true high availability and intelligent load balancing while significantly reducing resource requirements. In addition, automatic scale-up and scale-down ensures that only the server resources that are actually needed are provided. In large Kubernetes landscapes, this leads to noticeable cost benefits and conserves the resources to be used.

"OpenCloud also enables significant performance gains in high-volume enterprise scenarios and considerably reduces the operating costs of large platforms," explains Tobias Baader, Product Manager of OpenCloud. "This is how OpenCloud fully utilises the advantages of its modern cloud-native architecture."

Files on Demand for the OpenCloud desktop client

With Files on Demand, OpenCloud is expanding its desktop client with a powerful function that reduces local storage space requirements while offering the familiar convenience of file management. As before, all files appear in the Windows file system, but are only downloaded in full when required. This saves local storage space and the entire structure remains easily traceable at all times. Frequently used files can remain permanently available offline, while rarely required content is automatically swapped out. This ensures faster processes and optimised memory utilisation.

Dark mode, faster search and numerous updates

In terms of technology, the new release brings numerous design and performance enhancements. The user interface now follows the Material Design standard introduced by Google and enables the creation of a colour-coordinated, accessible theme with the specification of a single colour. Dark Mode is also available for the first time as a fixed component of the production release.

The integration of OpenSearch into the Enterprise licence improves the performance of the search function, making it very fast even with enormous amounts of data. In addition, the new version brings numerous detailed improvements that make day-to-day use easier. These include the new "Save / Export As" option in Web Office and enhanced recycle bin management.

Support for enterprise use

OpenCloud is available for general free use with a wide range of functions under free open source licences - and is therefore an important building block for any IT strategy for digital sovereignty. In addition, commercial enterprise licences offer providers, platforms and large organisations a more sophisticated range of functions - including reliable 24/7 manufacturer support even for highly critical applications.

Further information:

• Release Notes
• Licences & Support

About OpenCloud

OpenCloud is the powerful open source solution for file management, file sharing and content collaboration that fulfils the highest demands in terms of user-friendliness, performance, stability and scalability. The software can be operated flexibly on-premise or securely procured via partners. With intuitive operation, seamless integration, person-independent file management ("Spaces") and secure versioning, OpenCloud is ideal for the public sector, educational institutions, research and large companies and providers.

Together with OpenTalk and mailbox, OpenCloud is one of the three strong pillars of the Heinlein Group, which provides secure and digitally sovereign IT infrastructures for Europe.

Further information can be found at https://opencloud.eu

About the Heinlein Group

The Heinlein Group, based in Berlin, stands for digital sovereignty, data protection and open source. It unites the Heinlein Support, mailbox, OpenTalk and OpenCloud brands under its umbrella, which offer many years of expertise in open standards, personal advice and innovative solutions for secure communication and independent IT infrastructure. Whether email services, video conferencing or file management - the Heinlein Group's products are GDPR-compliant, flexible to use and technically state of the art. Together with the business units Hosting, Consulting and the Heinlein Academy, the Heinlein Group covers the entire spectrum for the development and operation of sovereign and resilient IT infrastructures.

Companies, public institutions, educational establishments and providers have been relying on the Heinlein Group's expertise for over 30 years. With its services, it creates maximum control and transparency, strengthens digital independence and promotes sustainable IT development.